Enduring Word of God

As for me, this is my covenant with them, saith the Lord; My spirit that is upon thee, and my words which I have put in thy mouth, shall not depart out of thy mouth, nor out of the mouth of thy seed, nor out of the mouth of thy seed's seed, saith the Lord, from henceforth and for ever (Isaiah 59:21). For verily I say unto you, till heaven and earth pass, one jot or one tittle shall in no wise pass away, but my words shall not pass away (Matthew 24:35). But the word of the Lord endureth forever. And this is the word by which the gospel is preached unto you (1Peter 1:25).